Thanks for the chapter!
So MC has a magic spell that can't create magic, just take over the Earth attribute magic of others. That and his golem Goletarou doesn't have rocks for brains but enough intelligence to fight, take autonomous action, cook and prepare food without orders, and become violently jealous. I'm beginning to think Goletarou is really a woman, or possibly was imprinted with or somehow holds the soul of the bound sacrificed girl MC found. Would explain why Goletarou would be nervous about approaching the spot where she died until MC went in and having character traits rather than a dumb machine that only knows how to follow orders given and nothing else.